1916 Case tractor. "Harry Martinson new 1916 18-HP" is written on the side of the tractor. Photo taken on the East side of the Tractor Test track. The "East Campus power plant stack' in the background. There are no Test reports on this steamer...

"1892. "The Old Froelich" The Granddaddy of Today's Farm Tractors; Forerunner of the Now Famous John Deere Line. At Ag Engineering Tractor Safety Day on the East Campus in 1957." Side view of the Froelich gasoline powered tractor on a flatbed.

A Belt Power test on a John Deere tractor. The location of the test is unknown. The two people examining the test data are unidentified. The test is apparently performed on a sdummer night because the windows are open and it is dark outside. Could...

A John Deere tractor with the Killefer offsest disk harrow attached to its 3-point Hitch. The disk harrow can be opened to any angle between the gangs by means of the hydraulic cylinder visible in the center between the two gangs. Killefer was a...

A side view of a Ford 4630 (16x8). This was a Front Wheel Assist (FWA) type tractor. Meaning that the front wheels could be engaged or disengaged as needed by the operator. The tractor is parked South of NTTL next to the tractor test track. Note...

A side view of a Ford FW-40 (with full Four Wheel-Drve) test #1290. The tractor is parked on the tractor test track, and the operator is in the cab. This is an articulated steer tractor (as opposed to a 4-wheel or 2-wheel steer system)

A side view of a Ford TW-15 4WD tractor from test 1536. The tractor is parked behind the test lab's South Door. The term 4WD is actually a misnomer because that stands for 4-wheel drive. Later this system was, correctly, called Front Wheel Assist...

A side view of a Ford TW-35 tractor from test 1517. The tractor is shown on test track during the test. Note the dual tires. The tests were performed on singles and duals. Caption on the front of the photo reads "#1517 Ford TW-35 Diesel." A receipt...

A side view of a Kubota M7030DT tractor from test 1597. The tractor is parked on the tractor test track. This is a Front-Wheel-Assist (FWA) model, meaning it has an operator-engagable Front-Wheel-Drive.